Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6177005 | System for producing ultrapure water having a TOC density of no more than 0.5 ppb | Kazuyuki Yamasaki, Toyoichi Nasu, Takahide Miyamoto, Seiji Okamoto, Kazuyuki Sakata +1 more | 2001-01-23 |
| 6063279 | Waste water treatment method and equipment being able to treat hydrogen peroxide, phosphorus, fluorine and organic-matters with high efficiency | Kazuyuki Yamasaki, Kazuyuki Sakata, Noriyuki Tanaka | 2000-05-16 |
| 6056876 | Method and apparatus for wastewater treatment | Kazuyuki Yamasaki, Satoshi Nishio, Takamasa Uchiyama | 2000-05-02 |
| 5895576 | Method and apparatus for wastewater treatment by chemical reaction of reactive filler and propagated microorganisms | Kazuyuki Yamasaki, Kazuyuki Sakata | 1999-04-20 |
| 5868934 | Method and apparatus for organic wastewater treatment capable of preventing decrease in permeation efficiency of submerged membrane without dilution | Kazuyuki Yamasaki, Kazuyuki Sakata | 1999-02-09 |
| 5849194 | Apparatus and method for treating waste water both chemically and biologically utilizing reaction fillers | Kazuyuki Yamasaki, Kazuyuki Sakata, Hiroshi Makino, Masanori Sanada | 1998-12-15 |
| 5788838 | Ultrapure water production system having pretreatment system for performing both anaerobic and aerobic organism treatments | Kazuyuki Yamasaki, Seiji Okamoto, Kazuyuki Sakata | 1998-08-04 |
| 5702604 | Apparatus and method for waste water treatment utilizing granular sludge | Kazuyuki Yamasaki, Shirou Imazu | 1997-12-30 |
| 5632885 | Hydrogen peroxide removal equipment capable of treating both waste water and waste gas | Kazuyuki Yamasaki | 1997-05-27 |